const db = require("../db/index");

exports.getArtCates = (req, res) => {
  const sql = "select * from ev_article_cate where is_delete=0 order by id asc";
  db.query(sql, (err, results) => {
    if (err) return res.cc(err);
    res.send({
      status: 0,
      msg: "获取文章分类数据成功",
      data: results,
    });
  });
};

exports.addArtCates = (req, res) => {
  const sql = "select * from ev_article_cate where name=? or alias=?";
  db.query(sql, [req.body.name, req.body.alias], (err, results) => {
    if (err) return res.cc(err);

    if (results.length === 2)
      return res.cc("分类名称和分类别名都被占用，请更换后重试");
    if (
      results.length === 1 &&
      results[0].name === req.body.name &&
      results[0].alias === req.body.alias
    )
      return res.cc("分类名称和分类别名都被占用，请更换后重试");
    if (results.length === 1 && results[0].name === req.body.name)
      return res.cc("分类名称被占用，请更换后重试");
    if (results.length === 1 && results[0].alias === req.body.alias)
      return res.cc("分类别名被占用，请更换后重试");

    //   插入文章sql语句
    const sql = "insert into ev_article_cate set ?";
    db.query(sql, req.body, (err, results) => {
      if (err) return res.cc(err);
      if (results.affectedRows !== 1) return res.cc("新增文章分类失败");
      res.cc("新增文章成功", 0);
    });
  });
};

exports.deleteArtCateById = (req, res) => {
  const sql = `update ev_article_cate set is_delete=1 where id=?`;
  db.query(sql, req.params.id, (err, results) => {
    if (err) return res.cc(err);
    if (results.affectedRows !== 1) return res.cc("删除文章分类失败");
    res.cc("删除文章分类成功", 0);
  });
};

exports.getArtCateById = (req, res) => {
  const sql = "select * from ev_article_cate where id=?";
  db.query(sql, req.params.id, (err, results) => {
    if (err) return res.cc(err);
    if (results.length !== 1) return res.cc("获取文章分类失败");
    res.send({
      status: 0,
      msg: "获取文章分类成功",
      data: results,
    });
  });
};

exports.updateCate = (req, res) => {
  const sql =
    "select * from  ev_article_cate where id<>? and (name=? or alias=?)";
  db.query(
    sql,
    [req.body.id, req.body.name, req.body.alias],
    (err, results) => {
      if (err) return res.cc(err);
      if (results.length === 2)
        return res.cc("分类名称与别名分别被占用，请更换后重试");
      if (
        results.length === 1 &&
        results[0].name === req.body.name &&
        results[0].alias === req.body.alias
      )
        return res.cc("分类名称与别名分别被占用，请更换后重试");
      if (results.length === 1 && results[0].name === req.body.name)
        return res.cc("分类名称被占用，请更换后重试");
      if (results.length === 1 && results[0].alias === req.body.alias)
        return res.cc("别名称被占用，请更换后重试");

      const sql = "update ev_article_cate set ? where id=?";
      db.query(sql, [req.body, req.body.id], (err, results) => {
        if (err) return res.cc(err);
        if (results.affectedRows !== 1) return res.cc("更新文章分类失败");
        res.cc("更新文章成功", 0);
      });
    }
  );
};
